that's what i've done:

1. text sizes in sms conversation, single sms and chat conversation set to 32px
2. alignment of avatars and bubbles in sms conversation like seen above
3. timestamps in chat and sms conversations is normal size (as i think it would be disturbing if the timestamps are too big in the history). timestamps in single sms view 32px.



instructions:
1. just unzip the four files (3 css, 1 html and 1 js) somewhere in your MyDocs folder (i.e. MyDocs/sms/)
2. open x-term
3. type "sudo gainroot" (you need to have "rootsh" installed)
4. type "cp MyDocs/sms/* /usr/share/rtcom-messaging-ui/html/"
5. open any conversation, close it and open it again for reloading the layout

edit: for your own avatar place a picture named "avatar.png" with 64 * 64 pixels in the html-folder