Steps to reproduce:

1. Open any VFX Graph.
2. Hover over the icons in the top bar.
3. On the top Right of the VFX Graph window, click the ▼ icon.
4. Hover over the blue links.
5. Repeat all steps in the opposite editor theme. (i.e. dark/light mode).

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In both light mode and dark mode:

• In Step 3: Icons will either turn blue on hover, or slightly change it's shade of grey.
• In Step 5: Blue link hover is difficult to read and does not span the whole dropdown.

In light mode:

• Dark blue on dark grey icons and text have noticeably poor contrast.

Expected results: 

• Unless there is a justification otherwise, hover colour behaviour should be the same for all icons.
• Hovered UI elements should have enough contrast to remain easily readable.
• Links hovered should have the hover background span the width of the dropdown.

Reproducible with versions: 6000.1.0b1, 6000.0.34f1, 2022.3.56f1, 2022.2.0f1

Tested on (OS): Windows 10, Mac Sequoia 15.1.1