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The OtterBox Defender Series is available in a number of covers for $59.90. I see it is also available at Verizon and other carrier stores for $49.99 so check around before your make your purchase.
You can get up to 36 different color combinations for this Defender case. They also have a bit lighter Commuter Series for $39.90. I like seeing that you can also now purchase the individual pieces by themselves if you want to change colors or something happens to break.
I first saw the Tech21 Impact Mesh in clear on an HTC employee's One (M8) and asked for the name of the case so I could track one down. I am a fan of the color orange and like that Tech21 has rigid orange pieces around the frame that offer corner protection for the One. The rest of the case is clear plastic. While I see Impact Shell and Tactical cases on their website I don't yet see the Impact Mesh one like this, but you may want to check your local wireless carrier store.