[Feature Request] Genenrate background color from primary color

[KawaiiZapic]

Existing Component

Yes

Component Name

theme-chalk

Description

In default, theme chalk will not create a new background color from the current primary color but use a pre-defined color that generates from default blue.
The green primary color with the blue-base background color is imperceptible but maybe seems to be a bit odd.
Is there a way to generate a background color from the theme color automatically?

[sxzz]

/cc @YunYouJun

[YunYouJun]

This is entirely possible, but we need the designer to give a specific specification.

@huangzhongzhong