In my experience, you don't need any kind of third party tools to butcher how the game looks, although they can make the process easier.
Your screenshots look like they have a lot of bloom as well. Set bloom to ultra in your game options, then copypaste this into your GraphicsConfigurationOverride.xml:
XML:
<?xml version="1.0" encoding="UTF-8" ?>
<GraphicsConfig>
<Bloom>
<Ultra>
<GlareScale>0.025</GlareScale>
<FilterRadius>1.0</FilterRadius>
<FilterRadiusWide>3.0</FilterRadiusWide>
</Ultra>
</Bloom>
</GraphicsConfig>
Those values will reduce (!) the in-game bloom. You want a lot of bloom, so play around with the values a bit and see. I'm very sorry that you have to do a bit of work yourself as I am not at my Elite PC right now.