Color completions showing generic icon

[mjbvz]

Issue Type: Bug

Repo

1. In a css file:

.a {
    color: r|
}

1. Trigger completions at the |

Bug
Suggestions for colors like red have a generic color icon instead of the actual color:

VS Code version: Code - Insiders 1.30.0-insider (c72cb12, 2018-11-13T06:12:08.651Z)
OS version: Darwin x64 18.2.0

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-4770HQ CPU @ 2.20GHz (8 x 2200)
GPU Status	2d_canvas: enabled checker_imaging: disabled_off flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on native_gpu_memory_buffers: enabled rasterization: enabled video_decode: enabled video_encode: enabled webgl: enabled webgl2: enabled
Load (avg)	5, 4, 3
Memory (System)	16.00GB (0.13GB free)
Process Argv	--disable-extensions
Screen Reader	no
VM	22%

Extensions disabled

[mjbvz]

This line is failing: https://github.com/microsoft/vscode/blob/master/src/vs/editor/contrib/suggest/suggestWidget.ts#L160

suggestion.documentation is a markdown string here, not a string

[octref]

Color codes show up fine for me, named colors don't. I guess it's related to changes in suggest widget.

[octref]

[jrieken]

This is a regression from us making things more markdown'ish by default...