Add `setup_contrast_popup!` #141

Job	Run time
Julia 1 - windows-latest - x64 - pull_request	2m 32s
Julia 1 - ubuntu-latest - x64 - pull_request	1m 28s
Julia lts - ubuntu-latest - x86 - pull_request	1m 30s
Julia lts - windows-latest - x86 - pull_request	3m 7s
Julia pre - windows-latest - x64 - pull_request	2m 44s
Julia 1 - windows-latest - x86 - pull_request	3m 21s
Julia pre - ubuntu-latest - x86 - pull_request	2m 22s
Julia lts - macOS-latest - x64 - pull_request	3m 9s
Julia pre - macOS-latest - x64 - pull_request	3m 55s
Julia 1 - ubuntu-latest - x86 - pull_request	2m 4s
Julia lts - windows-latest - x64 - pull_request	2m 37s
Julia pre - windows-latest - x86 - pull_request	3m 48s
Julia lts - ubuntu-latest - x64 - pull_request	1m 29s
Julia pre - ubuntu-latest - x64 - pull_request	1m 51s
Julia 1 - macOS-latest - x64 - pull_request	3m 47s
	39m 44s

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