Blue Jeans Keyboard Theme - Em is a personalization app developed by Keyboard Arts Themes. It is available for Android devices and is free to download and use.

To activate the keyboard theme, users need to install the latest version of RainbowKey. Once installed, users can open the Blue Jeans Keyboard Theme - Em and it will be enabled automatically. If the user does not have RainbowKey on their phone, they will be redirected to the Google Play page to install and activate the app in order to apply the theme.

RainbowKey provides a range of features including the ability to create your own keyboard with your favorite pictures, decorate your keyboard with over 40 beautiful fonts and colors, and choose from 10+ built-in themes. It also offers 30+ stylish fonts to decorate your words, swipe input for one-handed typing, smart emoji prediction with over 1000 lovely emojis, auto correction and word prediction, and the ability to move the cursor by swiping on the space bar.

Overall, Blue Jeans Keyboard Theme - Em is a customizable and feature-rich keyboard theme that allows users to personalize their Android devices with ease.