These lizards are sometimes called 'Blue Bellies" for obvious reasons.

Their coloration is quite variable from dark to light.
Western fence lizard - Sceloporus occidentalisWestern Fence Lizard - Sceloporus occidentalisWestern fence lizard - Sceloporus occidentalisWestern Fence Lizard - Sceloporus occidentalisWestern fence lizard - Sceloporus occidentalisWestern fence lizard - Sceloporus occidentalisWestern fence lizard - Sceloporus occidentalisWestern fence lizard - Sceloporus occidentalisWestern fence lizard - Sceloporus occidentalisWestern fence lizard - Sceloporus occidentalisWestern fence lizard - Sceloporus occidentalisWestern fence lizard - Sceloporus occidentalisWestern fence lizard - Sceloporus occidentalisWestern fence lizard - Sceloporus occidentalisWestern fence lizard - Sceloporus occidentalisWestern Fence Lizard - Sceloporus occidentalisWestern Fence Lizard - Sceloporus occidentalisWestern Fence Lizard - Sceloporus occidentalisWestern Fence Lizard - Sceloporus occidentalisWestern Fence Lizard - Sceloporus occidentalis