Renaming of color variables in Thorium Desktop

[arthur-lemeur]

We have recently updated the names of the color variables accross the application, here is a concordance table :

Old variables	New variables
--color-primary	--color-text-primary
--color-secondary	--color-neutral-base
--color-blue	--color-brand-primary
--color-blue-alt	--color-brand-primary-inverse
--color-light-blue	--color-brand-secondary
--color-extralight-grey	--color-gray-50
--color-extralight-grey-alt	--color-gray-100
--color-verylight-grey	--color-gray-200
--color-verylight-grey-alt	--color-gray-250
--color-verylight-grey-alt2	--color-gray-275
--color-light-grey	--color-gray-300
--color-medium-grey	--color-gray-400
--color-mediumdark-grey	--color-gray-800
--color-mediumdark-grey-alt	--color-gray-850
--color-dark-grey	--color-gray-900
--color-dark-grey-alt	--color-gray-950
--reader-fontColor	--color-text-reader
--scrollbar-thumb	--color-scrollbar-thumb
--color-disabled
--color-error	--color-error-bg
--color-error-dark	--color-error-text
--color-success	--color-success-text
--color-success-light	--color-success-bg
--color-appName
--color-annotations-txt	--color-annotation-text
--color-annotations-txt-area	--color-annotation-textarea
--color-annotations-bg	--color-annotation-bg
--color-button-hover
--color-docked-header	--color-header-docked
--color-buttons-border	--color-button-border

[danielweck]

Could you please provide feedback / fixes for: #3258