This is the tyrian – SE v4.7+4.8 theme by =d37nu1l, theme for 240 x 320 Sony Ericsson v4.7 + v4.8 compatible phones. If your Sony Ericsson phone model appears at the below, you can install it:
Theme suitable for the following SE phones:
v4.7 – C702/C902/C905/G705/T700/W595/W760/W902/W980/Z780
v4.8 – C510/C901/C903/Naite/T707/T715/W508/W705/W715/W995
Get download link after the jump.