EOS8: Wingpanel does not follow accent color in user sessions

[teamcons]

What Happened?

When starting the EOS 8 Preview (Latest: 11 May), and choosing Banana accent color, the application menu stays with the blue one (search bar outline, app backdrop)

The issue persists even killing wingpanel or starting it manually

Steps to Reproduce

1. Start live of EOS 8 Preview (11 May)
2. Choose an accent color in the greeter thingy (here, Bananana)
3. Go all the way through it, enjoying the options, like an user would
4. Open application menu

Expected Behavior

Applied accent colour: Banananana colour on search outline and apps backdrop

I assume both read a different GTK stylesheet (one GTK4 the other GTK3 ?)

Probably the team is already aware or this is too early in the dev process, but in case not, why not try my hand at that contributing thing :)

OS Version

8.x (Early Access)

Software Version

Latest release (I have run all updates)

Log Output

No response

Hardware Info

No response

[ryonakano]

Transferring this issue to the wingpanel repository, because I observed it not only in Applications Menu but also in other indicators.

[ryonakano]

Also, this issue doesn't seem to occur in Greeter session: