Small light colored spiders are usually newly hatched, subadults, and they often darken when they get bigger. This time of year the big orb weavers and garden spiders are out, in my area. You likely had a great year for adult spiders last year, and you are seeing the result of all the 2004 eggsacks disgorging their young this summer. Spiders are not all bad. Here in CA I dont sweep webs off the eaves very often, as later in the summer they intercept hundreds of termites in their flying and colonizing stages, a very useful service, and spiders love to eat all sorts of wood-eating insects, and reduce fruit fly and biting insect populations. Since spiders lurk in holes and cracks in your siding and eaves, that tends to fend off more harmful insects, such as carpenter ants et al, at points where they normally enter the structure. Bottom line - be kind to arachnids, unless they are black widows or brown recluse spiders. Most are harmless, and helpful, and fun to watch. OK get them out of the studio, but leave them on the exterior walls, etc.