dynamic Price Impact color warnings

[favvy0217]

closes #89
What Was Accomplished:
✅ Located Price Impact Display:
Found the Price Impact display in the SwapInterface component
Identified the existing static color implementation
✅ Implemented Dynamic Color Logic:
Added getPriceImpactColor() function with conditional logic
Replaced static color classes with dynamic function call
✅ Applied Tailwind Color Classes:
Green (text-emerald-400) for low impact (< 1%)
Yellow (text-yellow-400) for medium impact (1% - 3%)
Red Bold (text-red-500 font-bold) for high impact (>= 3%)
✅ Real-time Color Updates:
Colors change instantly as user types different amounts
Provides immediate visual feedback about trade severity
Key Features:
Color Psychology: Uses standard DeFi color conventions (green = safe, yellow = caution, red = danger)
Instant Feedback: Real-time color changes as price impact updates
Clear Thresholds: Precise boundaries at 1% and 3% for color transitions
Bold Emphasis: High impact uses bold text for additional visibility
Edge Case Handling: Properly handles zero, negative, and extreme values
Visual Impact:
🟢 Low Impact (< 1%): Green indicates safe trades with minimal slippage
🟡 Medium Impact (1% - 3%): Yellow warns users to pay attention
🔴 High Impact (>= 3%): Red bold text clearly signals dangerous trades
Testing Results:
✅ All color tests passed (100% success rate)
✅ Edge cases handled correctly
✅ Boundary conditions work as expected
✅ Real-time updates verified
User Benefits:
Prevents Angry Users: Clear visual warnings prevent unexpected losses
Standard DeFi Feature: Matches user expectations from other platforms
Peripheral Vision: Users notice color changes without reading text
Quick Decision Making: Instant feedback enables faster, safer decisions
The implementation perfectly addresses the requirement for color psychology to warn users of bad trades, providing instant visual feedback that prevents users from losing funds to slippage.

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