Yellow light blub background not transparent

[rebornix]

Issue Type: Bug

The yellow light blub background is not transparent

VS Code version: Code - Insiders 1.56.0-insider (Universal) (7ce1499, 2021-04-22T05:12:09.510Z)
OS version: Darwin x64 20.3.0

System Info

Item	Value
CPUs	Intel(R) Core(TM) i9-9980HK CPU @ 2.40GHz (16 x 2400)
GPU Status	2d_canvas: enabled gpu_compositing: enabled metal: disabled_off multiple_raster_threads: enabled_on oop_rasterization: enabled opengl: enabled_on rasterization: enabled skia_renderer: disabled_off_ok video_decode: enabled webgl: enabled webgl2: enabled
Load (avg)	2, 2, 3
Memory (System)	32.00GB (0.10GB free)
Process Argv	--enable-proposed-api ms-vscode.vscode-notebook-history --enable-proposed-api vscode.notebook-editing --enable-proposed-api vscode.vscode-test-resolver --enable-proposed-api donjayamanne.kusto --crash-reporter-id 1a907bbd-fa02-4595-81e0-63e1648afb31
Screen Reader	no
VM	0%

[mjbvz]

This was done to make sure the lightbulb has enough contrast, even if it is shown over text: #109043

/cc @misolori