ecto test

iTunes integration, iPhoto integration, resizing of images to create popups, change format/size, customizable shortcuts for placing html tags, movie upload, active development... ecto rocks.

And the spell checker that you like, its the spell checker integrated into the Cocoa Frameworks that ANY cocoa text entry box/field can use (the developer basically just enable it). The dictionary (for words that you've added) is shared between all the apps, and if you're unsure of spelling, its only a right/ctrl click away.

ecto does seem to have some bugs, however. I have had it crash and lose posts that it is supposed to auto-save, and I've had it lock up my system when it can't access the keychain or network issues occur.

But yes, the tag coloration is completely configurable and I'm sure you've discovered that already.