If you are bored with the stock look of the iOS 10 Messages app, then you should give BetterMessages a try to spice things up a little.
BetterMessages is a Simple Jailbreak Tweak to Customize the iOS 10 Messages App - And it's Free
While the iOS 10 Messages app gets the job done, it doesn't quite win any points in the aesthetics department. Since iOS 7 all the way up to iOS 10, things have been pale with no signs of any sort of customization option in sight. However, if you have a jailbroken device at hand, then the possibilities are endless.
Enter - BetterMessages for iOS 10.
It's a simple and free jailbreak tweak, which when installed, lets you customize the look and feel of the Messages app in different ways. You have options like changing the navigation bar color to anything you may like. Even the progress bar can be changed as well.
If you so desire, you have the option to hide certain elements from the iOS 10 Messages app using BetterMessages. There are emoji options as well, for those who are well tied into that sort of thing. Last but not the least, the color of the 'Send' button can be customized as well.
There are other features available in the tweak as well, which you can discover by checking out the screenshots below.
Though the above features might not sound like much, but you will be pleased to learn that more features are being added on a timely basis. So you can rest assured that this tweak will hand you over some great mileage in the long run.
As mentioned above, the tweak is absolutely free to download and use. Just search for BetterMessages in Cydia under the BigBoss repo and you are good to go. This is without a doubt one of the best Messages app customizing tweaks out there given its wonderful price of 'free.'
It's wonderful to come across such jailbreak tweaks as they enhance the overall user experience in a very drastic manner. Furthermore, even if you don't end up liking a 'free' tweak, you always have the option of reverting back to your stock settings. There's never any harm done.