Windows standalone builds store their PlayerPrefs in registry at:
Computer\HKEY_CURRENT_USER\Software\[company name]\[product name]

BUT editor stores them at:
Computer\HKEY_CURRENT_USER\Software\Unity\UnityEditor\[company name]\[product name]#GameDev #Unity3D #UnityTips

— Sébastien Dubois 💻🤖💥🤖 (@GFX47) September 11, 2018

If copy/pasting doesn't always work with GUILayout.TextField, use EditorGUILayout.TextField instead.#GameDev #Unity3D #UnityTips

— Sébastien Dubois 💻🤖💥🤖 (@GFX47) September 11, 2018

Windows standalone builds store their PlayerPrefs in registry at:
Computer\HKEY_CURRENT_USER\Software\[company name]\[product name]

BUT editor stores them at:
Computer\HKEY_CURRENT_USER\Software\Unity\UnityEditor\[company name]\[product name]#GameDev #Unity3D #UnityTips

— Sébastien Dubois 💻🤖💥🤖 (@GFX47) September 10, 2018

Stop implementing your StringToColor and ColorToString methods right now as they actually already exist in #Unity3D's APIhttps://t.co/RNtcoCGZzQ#UnityTips #GameDev pic.twitter.com/jth0ttZ13O

— Sébastien Dubois 💻🤖💥🤖 (@GFX47) July 17, 2018

If you will ever need to compare colors, please use Color32 instead of Color!
You'll compare bytes (0 to 255) instead of approximated floats (0 to 1).https://t.co/FHQ15ABQnM#UnityTips #Unity3D #GameDev pic.twitter.com/u3U8QpR4L6

— Sébastien Dubois 💻🤖💥🤖 (@GFX47) July 17, 2018

Also, if you're looking for player settings:
EditorApplication.ExecuteMenuItem("Edit/Project Settings/Player");#GameDev #Unity3D #UnityTips

— Sébastien Dubois 💻 (@GFX47) May 23, 2018