While this is not confirmed yet by HTC, irkan from xda-developer has got a silver HTC Desire compare to the dark brown version. The HTC Desire will be broadly available to customers across major European and Asian markets in early Q2. It comes with a 3.7 AMOLED WVGA display, 1GHz Snapdragon processor, 5 megapixel camera, LED flash, bluetooth, WiFi and GPS. Check out a few more photos here or a short video on Flickr.
Can be pre-ordered at PDA shop in the Netherlands: http://www.pdashop.nl/product/91189/htc-desire-silver.html