CalmCall is a tweak released during this day in Cydia, and with its help we can completely change the color of the banner that is visible when we have a call in progress, but the Phone application is closed in the background. Normally, that banner would have a much more striking color than the one in the image above, however CalmCall modify its design to make it resemble everything you see in the image, the modification being applied immediately.
CalmCall it is available for free in the repo BigBoss al Cydia.
