I haven’t changed anything visually, but my ColorSequence and NumberSequence parser uses a new function/method for interpreting the sequence of numbers that you enter into the text box as a NumberSequence or ColorSequence. Rather than just assuming that a multiple of 5 numbers means that it is a ColorSequence, the new function scans through the list and not only checks for if its item count is a multiple of 3 or 5, but it also checks if each 3rd/5th item is a zero.
This overall improves its accuracy, and fixes the bug where it will assume that a 5-item NumberSequence is a 3-item ColorSequence. In fact, if you could somehow type in a series of numbers that could be parsed as either type, the function will treat it as a NumberSequence, as that is more likely to be parsed without errors.
As you can see, there’s a new icon at the upper-right corner of the output window, which tells you if it’s an error (

) or if the sequence was parsed (

). Also, when an error is shown, the area used by gradients is less eye-searing, now a more pinkish-red color.
Speaking of errors, most of them appear in the output window now, instead of showing up as warnings in the F9 console, which probably wouldn’t be obvious to any visitors.
Here’s a new error, which is shown for most invalid sequences, which you can easily see just by writing words in the big text box instead of numbers.

I recorded a video of the utility, but I somehow lost it. It showed the cool animated background that smoothly fades between colors, and demonstrated how you can copy then paste the outputted text into Notepad. You’ll have to take my word that these things work, or just check it out yourself! 
Also, this utility is open source/uncopylocked! If you’d like to view the code or use it for your own projects, feel free to click the “…” button on the experience’s page then “edit” to open it in Roblox Studio.