fix: Minor UI fixes in Settings page (#6915)

## Description

This PR fixes the issue #6887.

## Current Behaviour

-
https://github.com/user-attachments/assets/6e53f7f5-7fed-4482-9c67-fb33969429ab

- <img width="539" alt="Screenshot 2024-09-04 at 10 25 14 AM"
src="https://github.com/user-attachments/assets/a1a1f8ac-8069-4b07-9ca1-d0c77596ff3b">

## Expected behavior

-
https://github.com/user-attachments/assets/63e92a6a-6be5-4d0a-b42f-d4310492b8b4

- <img width="226" alt="Screenshot 2024-09-04 at 10 36 49 AM"
src="https://github.com/user-attachments/assets/94e360c2-26ed-41f3-8943-dfee2b6c2a48">

packages/twenty-front/src/modules/ui/input/color-scheme/components/ColorSchemePicker.tsx

@@ -11,6 +11,7 @@ const StyledContainer = styled.div`
   > * + * {
     margin-left: ${({ theme }) => theme.spacing(4)};
   }
+  overflow: scroll;
 `;
 
 const StyledCardContainer = styled.div`

packages/twenty-front/src/modules/ui/input/components/ImageInput.tsx

@@ -157,6 +157,7 @@ export const ImageInput = ({
           )}
           <Button
             Icon={IconTrash}
+            accent="danger"
             onClick={onRemove}
             variant="secondary"
             title="Remove"