Datashader with more than 7 categories -> BoundsError in wong_colors

[behinger]

• [x] [e9467ef8] GLMakie v0.10.9
• [x] yes
• [x] Windows + Nvidia mx150

When running datashader with more than 7 categories, one runs into https://github.com/MakieOrg/Makie.jl/blob/ae8c1a455b20586febab682bc709a4ddd60d935f/src/basic_recipes/datashader.jl#L460

which boils down to

Makie.wong_colors()[8]

which returns

ERROR: BoundsError: attempt to access 7-element Array{RGBA{Float32},1} with eltype ColorTypes.RGBA{Float32} at index [8]

MWE

using GLMakie
p = rand(Point2f,100)
c = rand(1:8,100)
datashader(c,p)

changing c to 1:7 works.

---

It would be nice to be able to change the colorscheme too :)

[asinghvi17]

We should probably have a colormap or palette attribute to datashader which one can pass these colors to...

[ffreyer]

Related: #4160