diff --git a/src/components/nodes/GenerateImageNode.tsx b/src/components/nodes/GenerateImageNode.tsx
index 9d57fa88..24992770 100644
--- a/src/components/nodes/GenerateImageNode.tsx
+++ b/src/components/nodes/GenerateImageNode.tsx
@@ -767,7 +767,7 @@ export function GenerateImageNode({ id, data, selected }: NodeProps<NanoBananaNo
                 <select
                   value={currentModelId}
                   onChange={handleModelChange}
-                  className="nodrag nopan flex-1 min-w-0 text-[11px] py-1 px-2 bg-neutral-800 border border-neutral-700 rounded-md focus:outline-none focus:ring-1 focus:ring-neutral-600 text-white"
+                  className="nodrag nopan flex-1 min-w-0 text-[11px] py-1 px-2 bg-[#1a1a1a] rounded-md focus:outline-none focus:ring-1 focus:ring-neutral-600 text-white"
                 >
                   {GEMINI_IMAGE_MODELS.map((m) => (
                     <option key={m.value} value={m.value}>
@@ -783,7 +783,7 @@ export function GenerateImageNode({ id, data, selected }: NodeProps<NanoBananaNo
                 <select
                   value={nodeData.aspectRatio || "1:1"}
                   onChange={handleAspectRatioChange}
-                  className="nodrag nopan flex-1 min-w-0 text-[11px] py-1 px-2 bg-neutral-800 border border-neutral-700 rounded-md focus:outline-none focus:ring-1 focus:ring-neutral-600 text-white"
+                  className="nodrag nopan flex-1 min-w-0 text-[11px] py-1 px-2 bg-[#1a1a1a] rounded-md focus:outline-none focus:ring-1 focus:ring-neutral-600 text-white"
                 >
                   {aspectRatios.map((ratio) => (
                     <option key={ratio} value={ratio}>
@@ -800,7 +800,7 @@ export function GenerateImageNode({ id, data, selected }: NodeProps<NanoBananaNo
                   <select
                     value={nodeData.resolution || "2K"}
                     onChange={handleResolutionChange}
-                    className="nodrag nopan flex-1 min-w-0 text-[11px] py-1 px-2 bg-neutral-800 border border-neutral-700 rounded-md focus:outline-none focus:ring-1 focus:ring-neutral-600 text-white"
+                    className="nodrag nopan flex-1 min-w-0 text-[11px] py-1 px-2 bg-[#1a1a1a] rounded-md focus:outline-none focus:ring-1 focus:ring-neutral-600 text-white"
                   >
                     {resolutions.map((res) => (
                       <option key={res} value={res}>
@@ -818,7 +818,7 @@ export function GenerateImageNode({ id, data, selected }: NodeProps<NanoBananaNo
                     type="checkbox"
                     checked={nodeData.useGoogleSearch || false}
                     onChange={handleGoogleSearchToggle}
-                    className="nodrag nopan w-3 h-3 rounded border-neutral-700 bg-neutral-800 text-neutral-600 focus:ring-1 focus:ring-neutral-600 focus:ring-offset-0"
+                    className="nodrag nopan w-3 h-3 rounded bg-[#1a1a1a] text-neutral-600 focus:ring-1 focus:ring-neutral-600 focus:ring-offset-0"
                   />
                   Google Search
                 </label>
@@ -831,7 +831,7 @@ export function GenerateImageNode({ id, data, selected }: NodeProps<NanoBananaNo
                     type="checkbox"
                     checked={nodeData.useImageSearch || false}
                     onChange={handleImageSearchToggle}
-                    className="nodrag nopan w-3 h-3 rounded border-neutral-700 bg-neutral-800 text-neutral-600 focus:ring-1 focus:ring-neutral-600 focus:ring-offset-0"
+                    className="nodrag nopan w-3 h-3 rounded bg-[#1a1a1a] text-neutral-600 focus:ring-1 focus:ring-neutral-600 focus:ring-offset-0"
                   />
                   Image Search
                 </label>
diff --git a/src/components/nodes/InlineParameterPanel.tsx b/src/components/nodes/InlineParameterPanel.tsx
index a215f4f5..60e29bbf 100644
--- a/src/components/nodes/InlineParameterPanel.tsx
+++ b/src/components/nodes/InlineParameterPanel.tsx
@@ -25,7 +25,7 @@ export function InlineParameterPanel({
       <button
         type="button"
         onClick={onToggle}
-        className={`nodrag nopan w-full flex items-center justify-center gap-1 py-1 text-neutral-500 hover:text-neutral-300 transition-colors ${expanded ? "bg-[#1a1a1a]" : ""}`}
+        className={`nodrag nopan w-full flex items-center justify-center gap-1 py-1 text-neutral-500 hover:text-neutral-300 transition-colors ${expanded ? "bg-[#2a2a2a]" : ""}`}
         aria-label={expanded ? "Collapse parameters" : "Expand parameters"}
         aria-expanded={expanded}
         aria-controls={`params-${nodeId}`}
@@ -54,7 +54,7 @@ export function InlineParameterPanel({
           opacity: expanded ? 1 : 0,
         }}
       >
-        <div className="nodrag nopan nowheel bg-[#1a1a1a] px-3 pt-2 pb-3 rounded-b-lg">
+        <div className="nodrag nopan nowheel bg-[#2a2a2a] px-3 pt-2 pb-3 rounded-b-lg">
           <div className="space-y-1.5 max-w-[280px] mx-auto">{children}</div>
         </div>
       </div>
diff --git a/src/components/nodes/LLMGenerateNode.tsx b/src/components/nodes/LLMGenerateNode.tsx
index 190c3d6f..7d9b6f32 100644
--- a/src/components/nodes/LLMGenerateNode.tsx
+++ b/src/components/nodes/LLMGenerateNode.tsx
@@ -252,7 +252,7 @@ export function LLMGenerateNode({ id, data, selected }: NodeProps<LLMGenerateNod
               <select
                 value={provider}
                 onChange={handleProviderChange}
-                className="nodrag nopan flex-1 min-w-0 text-[11px] py-1 px-2 bg-neutral-800 border border-neutral-700 rounded-md focus:outline-none focus:ring-1 focus:ring-neutral-600 text-white"
+                className="nodrag nopan flex-1 min-w-0 text-[11px] py-1 px-2 bg-[#1a1a1a] rounded-md focus:outline-none focus:ring-1 focus:ring-neutral-600 text-white"
               >
                 {LLM_PROVIDERS.map(p => (
                   <option key={p.value} value={p.value}>{p.label}</option>
@@ -266,7 +266,7 @@ export function LLMGenerateNode({ id, data, selected }: NodeProps<LLMGenerateNod
               <select
                 value={nodeData.model || availableModels[0].value}
                 onChange={handleModelChange}
-                className="nodrag nopan flex-1 min-w-0 text-[11px] py-1 px-2 bg-neutral-800 border border-neutral-700 rounded-md focus:outline-none focus:ring-1 focus:ring-neutral-600 text-white"
+                className="nodrag nopan flex-1 min-w-0 text-[11px] py-1 px-2 bg-[#1a1a1a] rounded-md focus:outline-none focus:ring-1 focus:ring-neutral-600 text-white"
               >
                 {availableModels.map(m => (
                   <option key={m.value} value={m.value}>{m.label}</option>
diff --git a/src/components/nodes/ModelParameters.tsx b/src/components/nodes/ModelParameters.tsx
index d13b788f..d95f723c 100644
--- a/src/components/nodes/ModelParameters.tsx
+++ b/src/components/nodes/ModelParameters.tsx
@@ -251,7 +251,7 @@ function ParameterInput({ param, value, onChange }: ParameterInputProps) {
               onChange(val);
             }
           }}
-          className="nodrag nopan flex-1 min-w-0 text-[11px] py-1 px-2 border border-neutral-700 rounded-md bg-neutral-800 focus:outline-none focus:ring-1 focus:ring-neutral-600 text-white"
+          className="nodrag nopan flex-1 min-w-0 text-[11px] py-1 px-2 rounded-md bg-[#1a1a1a] focus:outline-none focus:ring-1 focus:ring-neutral-600 text-white"
         >
           <option value="">Default</option>
           {param.enum.map((opt) => (
@@ -278,7 +278,7 @@ function ParameterInput({ param, value, onChange }: ParameterInputProps) {
           type="checkbox"
           checked={effectiveValue}
           onChange={(e) => onChange(e.target.checked)}
-          className="nodrag nopan w-3 h-3 rounded border-neutral-700 bg-neutral-800 text-neutral-600 focus:ring-1 focus:ring-neutral-600 focus:ring-offset-0"
+          className="nodrag nopan w-3 h-3 rounded bg-[#1a1a1a] text-neutral-600 focus:ring-1 focus:ring-neutral-600 focus:ring-offset-0"
         />
         <span>{displayName}</span>
       </label>
@@ -336,10 +336,10 @@ function ParameterInput({ param, value, onChange }: ParameterInputProps) {
               }
             }}
             placeholder={param.default !== undefined ? `${param.default}` : undefined}
-            className={`nodrag nopan flex-1 min-w-0 text-[11px] py-1 px-2 border rounded-md bg-neutral-800 focus:outline-none focus:ring-1 text-white placeholder:text-neutral-500 ${
+            className={`nodrag nopan flex-1 min-w-0 text-[11px] py-1 px-2 rounded-md bg-[#1a1a1a] focus:outline-none focus:ring-1 text-white placeholder:text-neutral-500 ${
               validationError
-                ? "border-red-500 focus:ring-red-500"
-                : "border-neutral-700 focus:ring-neutral-600"
+                ? "ring-1 ring-red-500"
+                : "focus:ring-neutral-600"
             }`}
           />
         </div>
@@ -376,7 +376,7 @@ function ParameterInput({ param, value, onChange }: ParameterInputProps) {
           onChange(localValue || undefined);
         }}
         placeholder={param.default !== undefined ? `${param.default}` : undefined}
-        className="nodrag nopan flex-1 min-w-0 text-[11px] py-1 px-2 border border-neutral-700 rounded-md bg-neutral-800 focus:outline-none focus:ring-1 focus:ring-neutral-600 text-white placeholder:text-neutral-500"
+        className="nodrag nopan flex-1 min-w-0 text-[11px] py-1 px-2 rounded-md bg-[#1a1a1a] focus:outline-none focus:ring-1 focus:ring-neutral-600 text-white placeholder:text-neutral-500"
       />
     </div>
   );