What happened?

When using the color parameter in the add-ons search API, we don't handle the following cases well:

• Empty color parameter https://addons-dev.allizom.org/api/v5/addons/search/?type=statictheme&color=
• Some invalid color parameter like 8-characters hex colors https://addons-dev.allizom.org/api/v5/addons/search/?type=statictheme&color=336699aa

https://mozilla.sentry.io/issues/5802087597/?project=6310819

What did you expect to happen?

We should:

• For empty color, ignore the parameter completely
• For 8 characters hex strings, cut the last 2 chars (that represent transparency, which is not relevant here) and try to parse it
• Anything else that doesn't look like a valid color we should return a 400 error with an error message explaining that we expect a 6 chars hex string color code.

Is there an existing issue for this?

• I have searched the existing issues

┆Issue is synchronized with this Jira Task