Where can I find icons to associate with priorities? Separately how can I associate a new color? When I attempt to associate color, it defaults to the red/orange/gray scheme.
Those icons are default Jira-level icons – however, you can upload your own custom icons, provided that it’s hosted some place that can be fetched via URL.
Re: the color – hmm… I noticed the same issue. I recommend filing a ticket at https://support.atlassian.com.