I added custom arrows and i want disable when first slide and last slide on disable with filter apply color light

[Ayush2014Kira]

short description of the bug / issue, provide more detail below.

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[ paste your jsfiddle link here ]

use this jsfiddle to reproduce your bug:
http://jsfiddle.net/simeydotme/fmo50w7n/
we will likely close your issue without it.

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Steps to reproduce the problem

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What is the expected behaviour?

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What is observed behaviour?

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More Details

• Which browsers/versions does it happen on?
• Which jQuery/Slick version are you using?
• Did this work before?